57results about How to "Meet the needs of normal work" patented technology

The invention discloses a system for realizing automatic failure compensation for a power battery and realizes automatic compensation on an invalid unit of the power battery. The system comprises a battery module pack and a battery module control unit; the battery module pack comprises multiple battery units connected in series or in parallel, each battery unit comprises a first branch circuit, a second branch circuit and a switch control module, and each first branch circuit comprises a battery module; the battery module control unit is used for marking the battery units as working battery units or reserved battery units, and detecting the working state of one working battery unit and judging that the current working battery unit is invalid or not, if so, the invalid working battery unit is marked as an invalid battery unit, and any of the reserved battery unit as the working battery unit; a control instruction is transmitted to the working battery unit, the second branch circuit of the working battery unit is enabled to be switched off, and the first branch circuit of the working battery unit is enabled to be switched on; a control instruction is transmitted to a reserved battery unit, the first branch circuit of the reserved battery unit is enabled to be switched off, and the second branch circuit of the reserved battery unit is enabled to be switched on; and a control instruction is transmitted to the invalid battery unit, the first branch circuit of the invalid battery unit is enabled to be switched off, and the second branch circuit of the invalid battery unit is enabled to be switched on. The invention also discloses a method for realizing automatic failure compensation for the power battery.

The invention belongs to the field of turbochargers for internal combustion engines, in particular to a rotor supporting mechanism of a rolling bearing turbocharger. It includes a bearing sleeve and two springs, two thrust sleeves and two bearings in the bearing sleeve. The two springs are symmetrically arranged in the bearing sleeve and connected to each other. Put the spring into the thrust sleeve and apply pre-tightening force. Two bearings are respectively arranged on the end face of the thrust sleeve. Both bearings are angular contact rolling bearings. The advantage of the present invention is that ceramic rolling bearings are used instead of ordinary floating bearings, which improves the mechanical efficiency and transient response capability of the turbocharger, solves the vibration problem of the rolling bearing turbocharger, and improves the steady-state performance and performance of the turbocharger. The service life of the rolling bearing is improved, the support rigidity of the rolling bearing is improved, the limit speed of the rolling bearing is increased, the requirement of high-speed operation of the turbocharger is met, the lubrication problem of the turbocharger is solved, the reliability of the rolling bearing supercharger is improved, and the balanced transmission The force system meets the requirements for the normal operation of the rolling bearing turbocharger.

The invention provides carbon fiber paper with a conductive network enhanced by carbon black and a preparation method thereof, and the method comprises the following steps: step 1, uniformly dispersing carbon fibers, aramid fibrid and carbon black in a polyoxyethylene aqueous solution according to a ratio of (40-80): (10-50): 10 to obtain a mixed slurry; step 2, molding the mixed pulp to obtain a wet paper web of the carbon fiber paper, and sequentially squeezing and drying the wet paper web of the carbon fiber paper to obtain raw paper of the carbon fiber paper; and step 3, dipping raw paper of the carbon fiber paper in the phenolic resin solution, airing, and hot-pressing at 150-160 DEG C to obtain the carbon fiber paper with the conductive network enhanced by the carbon black. The carbon fiber electric heating paper with high heating rate and good temperature resistance is prepared by introducing aramid fibrid as dispersion forming fiber and carbon black as a three-dimensional network structure bridge.

The invention provides a solar air-made water purifier which comprises an automatic control system, a solar power supply system, a water-making device and a purifying device, wherein the water-making device comprises a turbo fan, a compressor, a condenser and an evaporator; the compressor, the condenser and the evaporator are successively connected with each other through a circulating pipeline; the purifying device comprises a water collecting tray, a water storage tank and a multi-level filter; the water collecting tray is arranged under the evaporator; the condensate water condensed by the evaporator is collected into the water storage tank through the water collecting tray and then flows out after being filtered and turned into purified water through the multi-level filter; the solar power supply system is used for transmitting electric energy to the water-making device and the purifying device through the automatic control system. The solar air-made water purifier can utilize solar energy to automatically condense the moisture-containing air and turn into domestic drinking water and has the characteristics of simple structure, low energy consumption and high water-making efficiency.

The invention discloses a desk with a dustproof function and an extending function. The desk comprises a tabletop and a support plate, wherein one side of the tabletop is rotatably provided with an extension plate; a telescopic structure is arranged between the extension plate and the support plate; the telescopic structure is a cylinder which is fixed on the support plate; an output shaft of the cylinder is fixedly connected with the extension plate; the back part of the tabletop is provided with a back plate; two sides of the tabletop are provided with baffles; the baffles are provided with guide grooves; a sponge structure comprises a wooden plate; the lower end of the wooden plate is provided with a sponge layer; the left and right sides of the wooden plate are provided with sliding rails; the parts, which are positioned in a rectangular groove, of the tabletop is provided with sliding chutes matched with the sliding rails. The extendable desk is beneficial to work of employees.

The invention relates to the technical field of anti-seismic safety, in particular to a three-dimensional gear type self-resetting energy dissipation and seismic isolation support. The support comprises an upper limiting plate, an upper rubber layer, an upper support plate, a toothed ellipsoid rotating body, a lower support plate, a lower rubber layer and a lower limiting plate in sequence from top to bottom. The upper support and the lower support are connected through a plurality of shear keys, and rubber sealing rings are arranged on the outer sides of the shear keys. The upper limiting plate is connected with the main beam through studs, and the lower limiting plate is connected with a cover beam through studs. Through the meshing effect of the gears, the ellipsoid with the gear in themiddle shifts under the strong shock effect, meanwhile, the stress area is not changed, stress is uniform, the overturning danger is reduced, the rotating angle of the ellipsoid rotating body is limited through limiting check blocks on the two sides of a gear ring, and the phenomenon that different components are disengaged from one another is effectively avoided.

The invention relates to a GaN-based low leakage current clamped beam switch field effect transistor NOR gate, which is composed of two N-type MESFETs (metal semiconductor field effect transistors) with a clamped beam switch, that is, a first field effect transistor (1) and a second field effect transistor (2), and a load resistor (3), wherein source electrodes of the first field effect transistor (1) and the second field effect transistor (2) are connected and grounded together, drain electrodes of the first field effect transistor (1) and the second field effect transistor (2) are also connected together and connected to a power supply VCC through the resistor (3), a first input signal (A) and a second input signal (B) are inputted on the clamped beam switches (5) of the first field effect transistor (1) and the second field effect transistor (2) through anchor areas (7) respectively, and output signals are outputted between drain electrodes of the first field effect transistor (1) and the second field effect transistor (2) and the load resistor (3). The NOR gate provided by the invention has the significant advantages of small size, easy integration, low power consumption, high switching speed and the like.

The invention discloses a CT power supply device, a CT device and a CT detection vehicle. The CT power supply device comprises an output end, a control module and at least two energy storage modules,and the output end is used for connection with a high-voltage generator. Each energy storage module is connected to the output end, and the control module controls whether to supply power to the output end or not; and when the preset condition is satisfied, the controller controls the energy storage module that supplies power to the output end to stop the power supply, and controls at least another energy storage module to supply power to the output end, that is, n groups of energy storage modules are being charged in normal states, and one group of energy storage modules is working in rotation. It not only enlarges the use area of CT device, but also avoids the disturbance to CT detection caused by the fluctuation of AC current of a power network. Moreover, the energy storage modules cansupply power in turn, which can ensure the quality of power supply to the high-voltage generator, for example, the amplitude of the provided voltage can meet the need of the normal operation of the high-voltage generator.

The invention provides a system capable of improving the performance of a battery at low temperature. The system comprises a battery, a temperature detection unit, a voltage detection unit, a heatingunit and a control unit, wherein the temperature detection unit and the heating unit are arranged near the battery respectively, and are connected with the battery respectively; the voltage detectionunit is connected with the battery in parallel; a voltage-capacity discharge characteristic curve of the battery at different temperatures is stored inside the control unit; the control unit is connected with the temperature detection unit, the voltage detection unit, the heating unit and a component capable of awakening the equipment; and the control unit is used for judging whether the battery can meet the operational requirement of the equipment or not according to the temperature of the environment around the battery, the voltage of the battery and the voltage-capacity discharge characteristic curve of the battery at different temperatures after a awakening signal is received and controlling the heating unit to heat the environment around the battery according to the judgment result. Therefore, according to the system, the performance of the battery at low temperature can be improved, and the equipment supplying power by using the battery still can operate normally under low temperature environments.

The invention relates to a vertical type rolling mill speed reducer. The vertical type rolling mill speed reducer comprises a shell, a first partition board and a second partition board are verticallymounted in the shell, an upper conical gear and a lower conical gear are mounted on the lower end of a lifting rotating shaft, the lifting rotating shaft is rotatably mounted in a lifting frame, thelifting frame is slidingly mounted in the shell in the upper and lower end direction of the shell, a third transmission shaft is rotatably mounted on the second partition board and the other side ofthe shell, one end of the third transmission shaft penetrates through the second partition board and is fixedly provided with a variable speed conical gear, the inner side and the outer side of the variable speed conical gear are provided with an inner gear tooth and an outer gear tooth correspondingly, one end of the variable speed conical gear is located between the upper conical gear and the lower conical gear, the lifting frame does lifting in the shell, the variable speed conical gear is in engaged connection with the upper conical gear through the inner gear tooth or is in engaged connection with the lower conical gear through the outer gear tooth, the rotating speed of the variable speed gear can be changed, the changing of the rotating speed of an output shaft of the speed reducercan be achieved, operation is easy and practical, and the normal work needs of a rolling mill can be met.

The invention discloses a control method, device and system for an air conditioning device. The control method for the air conditioning device comprises the following steps of: obtaining a natural cold source temperature value of a temperature condition used for representing a natural cold source; determining interval results of a temperature interval at which the natural cold source temperature value is located; and determining a working mode of a cold source leading device according to the interval results, and leading a natural cold source into the room by the cold source leading device. The natural cold source can be selectively led in according to the temperature condition of the natural cold source, so that power consumption of an air conditioning system of a machine room can be effectively reduced.

The invention provides a cross-coupled oscillator using gallium nitride-based clamped beam switches with low leakage current, and a preparation method of the cross-coupled oscillator. The MESFET with the clamped beam switch is used to replace a traditional MESFET. A pull-down electrode of the clamped beam switch of the cross-coupled oscillator is grounded. The threshold voltages of the two clamped beam switch MESFETs are designed to be equal, and the threshold voltage of the clamped beam switch MESFET is equal to the pull-down voltage of the clamped beam of the clamped beam switch MESFET. When the voltage between the clamped beam and the pull-down electrode plate is more than the absolute value of the threshold voltage, the clamped beam switch is pulled down to the gate and is closely stuck with the gate. Simultaneously, the voltage between the gate and the source is more than the threshold voltage too, and the MESFET is broken over. When the voltage between the clamped beam switch and the pull-down electrode plate of the MESFET is less than the threshold voltage, the clamped beam switch is suspended above the gate and is cut off. The power consumption of the cross-coupled oscillator is reduced.

The invention discloses a dustproof office table. The dustproof office table comprises a table top and support plates. An extension plate is rotationally arranged on one side of the table top. A retractable structure, namely an air cylinder, is arranged between the extension plate and one of the support plates, the air cylinder is fixed to the support plate, and an output shaft of the air cylinder is fixedly connected with the extension plate. A back plate is arranged on the back of the table top. The table top is provided with a rectangular groove. A sponge structure flush with the surface of the table top is arranged in the rectangular groove slidably, and comprises a wooden board. A sponge layer is arranged at the lower end of the wooden board. A sliding rail is arranged on each of the left side and the right side of the wooden board. Sliding grooves matched with the sliding rails are formed in the rectangular groove of the table top. The extensible office table is beneficial to work of staff.

The invention discloses a dustproof office table. The dustproof office table comprises a table top and a supporting plate, wherein one side of the table top is rotatably provided with an extension plate; a retractable structure is arranged between the extension plate and the supporting plate and is a cylinder; the cylinder is fixed on the supporting plate; an outputting shaft of the cylinder is fixedly connected with the extension plate; a back plate is arranged on the back of the table top; baffles are respectively arranged on two sides of the table top; each baffle is provided with a guiding groove; a mounting block is arranged on a portion, which is close to the back plate, of each baffle; each mounting block is provided with a through hole; a drum is mounted in each through hole in a matched mode; two ends of each drum respectively penetrate in the through holes of the two mounting blocks; a plurality of layers of cloth are wound on each drum; and a guiding strip which is matched with the guiding groove of each baffle is arranged on the surface of the corresponding layers of cloth. The dustproof office table facilitates work of workers.

The invention discloses a dust-proof desk, which comprises a desktop and a support plate; a backboard is provided on the back of the desktop; baffles are provided on both sides of the desktop, and guide grooves are provided on the baffle; the baffle A mounting block is provided near the back plate, and a through hole is opened in the mounting block, and a roller is fitted in the through hole, and the two ends of the roller respectively pass through the through holes of the two mounting blocks; the roller is wound with multi-layer cloth, and the surface of the multi-layer cloth is provided There is a guide bar matching the guide groove of the baffle; a cabinet is arranged under the table top, a negative ion sterilizer is installed at the bottom of the cabinet, and a multi-layer partition is arranged in the cabinet from top to bottom, and the partition is full of through holes; The tabletop is rotatable and provided with a rotating plate, and a cylinder is fixedly connected to the rotating plate, and a plurality of sorting plates are evenly distributed on the cylinder. The desk is beneficial to the work of the staff.

The invention discloses an office table with a dustproof function. The table comprises a table surface and a supporting plate. One side of the table surface is rotatably provided with an extension plate. A telescoping structure is arranged between the extension plate and the supporting plate. The telescoping structure is a cylinder. The cylinder is fixed on the supporting plate. The output shaft of the cylinder is fixedly connected with the extension plate. The back part of the table surface is provided with a back board. Two sides of the table surface are provided with baffle plates. The baffle plates are provided with guide grooves. The baffle plate is provided with an installing block on the position close to the back board. The installing block is provided with a hole, and the hole is internally provided with a roller in a cooperation manner. Two ends of the roller respectively pass through the holes of the two installing blocks. The roller is wrapped by a plurality of layers of cloth. The surfaces of the plurality of layers of cloth are provided with guiding strips cooperated with the guide grooves of the baffle plates. The table surface is rotatably provided with a rotating plate. The rotating plate is fixedly connected with a drum, and the drum is uniformly provided with a plurality of classifying plates. The prolongable office table is beneficial for work of staff.

The invention discloses a flexible installation fixing apparatus for a minitype mode-conversion type ultrasonic motor. The minitype mode-conversion type ultrasonic motor comprises a rotor, a stator assembly and a motor base. A flexible installation sheet is configured to the stator assembly. A matrix of the flexible installation sheet is an annular thin metal sheet. Installation legs are formed by radial extension of the annular thin metal sheet on an outer ring surface. Outer ring diameter of the annular thin metal sheet is consistent with diameter of the minitype mode-conversion type ultrasonic motor. The flexible installation sheet is embedded in an annular notch opened on a wall surface of the stator assembly. An installation position of the flexible installation sheet on the stator assembly is near a position of a first longitudinal-vibration mode pitch plane generated by the stator assembly. The installation legs of the flexible installation sheet are connected with fixed upright columns fixed on the motor base. The flexible installation fixing apparatus provided by the invention can carry out flexible axial and longitudinal positioning to the motor, is small in effects on operation modes of the motor, can effectively satisfy requirements on fixing and normal operation maintenance of the motor.

The invention belongs to the analog integrated on-chip secondary power supply technology field and especially relates to an on-chip secondary power supply structure taking a band gap reference structure as a core. A band gap reference is taken as a core structure, a band gap reference voltage is amplified to a required secondary power supply voltage through a proportional resistor, and a driving line module is added on the above basis so that a secondary power supply structure with a certain driving capability is obtained. The structure of the circuit is simple, the structure is easy to be transplanted on various technologies, the structure can adapt to various application conditions, a good temperature coefficient can be possessed, and the demand of normal work under an extreme temperature condition can be satisfied.

The invention relates to a gallium nitride base low leakage current cantilever beam switch class B push-pull power amplifier, comprising three cantilever beam switch N type metal semiconductor field effect transistors (MESFET), a cantilever beam switch P type MESFET, and an LC loop. The difference among the three cantilever beam switch N type MESFETs only lies in different shapes of the cantilever beam switches. The cantilever beam switch of the first cantilever beam switch N type MESFET (1) is a wide beam. The cantilever beam switches of the second cantilever beam switch N type MESFET (19) and the third cantilever beam swtich N type MESFET (20) are narrow beams. The cantilever beam switch MESFETs used by the power amplifier are based on GaN substrates, metal and a heavy doping N region form ohm contact so as to form a source electrode and a drain electrode, metal and a channel region form Schottky contact so as to form a gate electrode, the cantilever beam switches are suspended above the gate electrode of the MESFET, and an alternating current signal is loaded on the cantilever beam switch, so that the quality factor of the LC loop of the output end of the class B push-pull power amplifier is improved.

The invention provides a GaN-based low leakage current cantilever beam switch differential amplifier which has the remarkable advantages of being small in size, easy to integrate and high in switching speed. An MESFET with a cantilever beam switch is used for replacing a traditional MESFET. The cantilever beam switches of N-type MESFETs used in the differential amplifier are suspended above gate electrodes of the MESFETs. Schottky contact is formed between the gate electrodes of the MESFETs and a substrate, and a depletion layer is formed in the substrate below the gate electrodes. The pull-down voltage of each cantilever beam switch is designed to be equal to the threshold voltage of each MESFET. When the voltage applied over the cantilever beam switch and a corresponding pull-down electrode is greater than the threshold voltage of the corresponding MESFET, a cantilever beam is pulled down to be clung to the corresponding gate electrode, and at the moment, the width of a depletion region in a channel region of the MESFET is reduced, and the conductivity of the channel region is improved to amplify AC signals on the basis. When the voltage applied over the cantilever beam switch and the corresponding pull-down electrode is smaller than the threshold voltage of the corresponding MESFET, the cantilever beam cannot be pulled down, and the MESFET cannot be broken through, so that current leakage of the corresponding gate electrode is eliminated, and the power consumption of the differential amplifier is reduced.

The invention discloses an electromagnetic oven without a heat radiator. The electromagnetic oven comprises a connecting wire, a host machine mechanism and a cooking range mechanism which are sequentially connected, wherein the connecting wire is connected with an external power supply; the cooking range mechanism comprises a cooking range body shell and a coil panel; the coil panel is arranged in the cooking range body shell; the coil panel is a strip conductor coiled into an S-shaped panel; a clearance is reserved between the adjacent side surfaces of the strip conductor; two end parts of the strip conductor serve as connecting ends which are electrically connected with the output end of a main controller. The structure of the coil panel in the cooking range mechanism is optimized and improved, so that the coil panel is small in calorific value and rapid in heat dissipation during use; the cooking range mechanism is capable of meeting the normal operation requirements of the electromagnetic oven without the heat radiator, and the problem of safety accidents of a coil panel manufactured by tightly coiling up multi-strand wires in the prior art can be well solved; meanwhile, the host machine mechanism and the cooking range mechanism of the electromagnetic oven are separately arranged, so that the heat dissipation effect of the electromagnetic oven is greatly enhanced.